Die support for wire-drawing machines



Mar. 6, 1923. 1,447,356.

C. H. OSLUND.

DIE SUPPORT FOR WIRE DRAWING MACHINES- FILEDJUNEIF) I921- Patented Mar. 6, 1923.

raise CHARLES H. OSLUND, OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO THE 0 & J

' MACHINE COMPANY, A CORPORATION OF MASSACHUSETTS.

DIE SUPPORT FOR WIRE-DRAWING MACHINES.

Application filed June 15,

To all whom it may concern:

Be it known that-I, CHARLES H. OSLUND, a citizen of the 'United States, residing at Vorcester, in the county of lVorcester and State of Massachusetts, have invented a new and useful Die Support for \Vire-Drawing Machines, of which the following is a specification. y

This invention relates to the mounting of the dies of a wire drawing machine in such a manner as to permit them to come and go slightly, in accordancewith irregularities of the wire being drawn, and this is the principal object of the invention. It is well known in the wire drawing art that, no matter how carefully the wire is produced, it necessarily presents some inequalities in size, shape, temper and hardness. \Vhen wire has been drawn through rigid dies, incapable of accommodating themselves in any way to the inequalities above mentioned,'there have been numerous breaks in the wire. This I have discovered can be prevented or greatly reduced in an extremely simple way, by providing strong spring resistance balanced on both sides. Upon application of this simple invention, without materially adding to the expense of the wire drawing machine, I am enabled to materially increase the product and improve it by a great reduction in breakages of the above mentioned kind; Further objects and advantages of the invention will appear hereinafter. I

Reference is to be had to the accompanying drawing, in which- Fig. 1 is a plan of a die support for a wire drawing machine constructed in accordance with this invention;

Fig. 2 is aside View of the same, and

Fig. 3 is a front end elevation.

a well'known type of wire drawing die support, involving a brace or bracket 10 mounted on the drawing machine in the usual position, This is provided'- with a pair of upwardly extending sides 11, each of which is perforated and provided with a guide pin 12 extending therefrom in a directhat they guide the I have shown the invention as applied to 1921. Serial No. 477,813.

through which the guide pin 12 passes. This-pair of ears 14 project from a box 15, or receptacle for lubricant, through which the wire passes. On the other endthis box is provided with a flange 16 in front of which is a transverse passage 17 in which is located the die 18. This die is held in position by a. set screw 19. The die is the same as any other die, and it will be seen that it is held yieldingly' back by the springs 13. lVhen an excessive strain occurs, no matter whether it is due to some inequality in the driving motion or to a hard spot in the wire or the like, the springs will yield. This permits the die and soap box 15 to move forward for an instant with the wire (as shown in Fig. 2) and instantaneously relieves the strain. Then immediately the springs pull the die and its support back into normal condition and instead of a break in the product, the operation will go on continuously.

The guide pins 12 can be adjusted to give the springs 13 any desired compression. In this way it can be arranged so that the flange 16 under normal conditions, will not rest flat against the sides 11, but will occupy an intermediate position so that it can move either forward or back in accordance with increased or decreased tension. In this way some of the overheating of the wire is-also eliminated and the product thus improved. This I find a material advantage in addition to the decrease in the breakage and stops in addition to the increase in the product of the machine. The guide pins 12 are parallel to each other and are fixed at one end so die to move in a. parallel direction at all times and do not allow it to get out of alignment.

By this simple means an important improvement is introduced in this'industry as will be readily understood. The product of the machine is increased and the wire im proved. Alsothe machine can be operated by a less skilled operator and the operator can devote less attention to the machine on account of the reduced number of breaks thus enabling him to run more machines.

7 Although I have illustratedand described only a single form of the invention, I am aware of the fact that modifications can be made therein b any person skilled in the art without departing from the scope of the invention as expressed in the claim.

Therefore I do-not wish to be limited to all the details of construction herein shown and-described, but what I do claim is In'a wire drawing device, the combination with a bracketprovided with a pair of upwardly extending sides, each perforated, a guidepin extending through each perforation in a direction parallel to the direction of the wire, said pins and sides being located at a distance apart. a spring on each ofsaid guide pins bearing against said upwardly extending sides, and a box for lubricant having ears on opposite sides provided with perforations through which said pins pass and-having means for preventing the ears from being pushed off the pins, said springs bearing against said ears, of a wire drawing die supported at the end of said "box beyond the springs; said box having means by which the die is firmly secured in position and also provided with flanges oppositely located and engaging the surfaces of said upwardly extending sides opposite the springs, whereby the whole box Wlth its die is yieldingly mounted'and is guided to move with the wire or against it in parallel relationship to it at all times.

In testimony whereof "'I have hereunto 'affixed my signature. I

CHARLES H. OSLUND; 

